A Better Mower Blade Balancer

This is a hybrid mower blade balance cone. I'm a mobile small engine mechanic and don't have the space for a professional wall mounted balancer. I needed the ease and mobility of those cheap Arnold type cone balancers with the reliability to fit almost any blade and still give an acceptable result. I've designed this balancer to use a magnetic sliding ring that helps keep the blade centered and stationary on the cone like the wall balancers but without those annoying steps that never seem to fit any blades like the cheapo balancers. This will accommodate blades with up to a 1-9/16" center hole as well as blades with star holes, S-holes and bowtie holes. There a two versions: Sits on a stand and requires you to print the Base, Standard Cone and Outer Rim. Hangs from a string and requires you to print the Hanging Cone and Outer Rim. If you use the base you should clean the tip with fine grit sandpaper to smooth it into a nice 2mm round tip. Because of the layers on 3d prints the balancer tends to "stick" until it's been used and worked in a few times. I cleaned the tip of the one I made with sandpaper then put a heavy blade on it and rocked it and spun it around for about 20 - 30 minutes until it seemed to stick less and produce more accurate results. The hanging version tends to be a little more accurate. The hole for the string is 2mm. I used a length of standard nylon mason twine with a simple surgeons knot to hang from a hook on my ladder rack. I'm not sure if the knot inside the Cone matters or not but I used a Trilene type knot because it has a more square profile to allow the cone to sit/ hang flat on it. You will need 16 - 5mm x 2mm round neodymium magnets to glue into the Outer Rim to complete assembly. To print the Outer Rim and Cone you want to use as close to 100% infill as you can so it balances right. The base infill does not matter but if you plan on using it for large heavy DR. type brush blades you may want to print it as strong as possible. TIPS: Before balancing your blades make sure they are clean and straight and not bent, twisted or warped. To balance the blade properly it need to be balanced lengthwise as well as side to side. If your blade balances lengthwise but wants to tip sideways too much you need to first check it's not the balancer "sticking" then check the center hole is actually in the center of the blade... sometimes the punch machines miss. Also check the hole is still round and hasn't been wobbled out or elongated. If any cracks or damage is detected throw them in the scrap pile. If hole is centered but the blade is actually out of balance side to side, keep removing metal until the blade balances side to side as well as lengthwise.